表格背景颜色设置为淡色

Question

如何设置附加图像中指定的表单的背景颜色？

Answer 1

一种方法是直接将图像用作表单BackgroundImage。

如果您希望以程序方式（更灵活）实现此目的，可以使用OnPaintBackground手动绘制表单的背景：

protected override void OnPaintBackground(PaintEventArgs e)
{
    using (var brush = new LinearGradientBrush
               (DisplayRectangle, Color.Black, Color.DarkGray, LinearGradientMode.Vertical))
    {
        e.Graphics.FillRectangle(brush, DisplayRectangle);
    }
}

protected override void OnResize(EventArgs e)
{
    base.OnResize(e);
    Invalidate(); // Force repainting on resize
}

<强>结果：

Answer 2

使用可以使用OnPaint event的{​​{1}}，您可以在那里进行一些修改。检查指定的链接以了解详细信息。

使用winform执行此操作：

/ *采用线性渐变画笔* /

LinearGradientBrush

OnPaint Overload的代码片段：

LinearGradientBrush brush = new LinearGradientBrush(rect, Color.Orange, Color.Orchid, LinearGradientMode.ForwardDiagonal);

另一种方式是使用 Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs) ' Declare a variable of type Graphics named formGraphics. ' Assign the address (reference) of this forms Graphics object ' to the formGraphics variable. Dim formGraphics As Graphics = e.Graphics ' Declare a variable of type LinearGradientBrush named gradientBrush. ' Use a LinearGradientBrush constructor to create a new LinearGradientBrush object. ' Assign the address (reference) of the new object ' to the gradientBrush variable. Dim gradientBrush As New LinearGradientBrush(New Point(0, 0), New Point(Width, 0), Color.White, Color.DarkMagenta) ' Here are two more examples that create different gradients. ' Comment the Dim statement immediately above and uncomment one of these ' Dim statements to see how varying the two colors changes the gradient result. ' Dim gradientBrush As New LinearGradientBrush(New Point(0, 0), New Point(Width, 0), Color.Chartreuse, Color.SteelBlue) ' Dim gradientBrush As New LinearGradientBrush(New Point(0, 0), New Point(Width, 0), Color.White, Color.SteelBlue) formGraphics.FillRectangle(gradientBrush, ClientRectangle) End Sub 事件并使用OnPaintBackground 参考：MSDN

LinearGradientBrush

参考：
How to Add a Gradient Background to a Win Form with VB.NET & VB2005
Windows Forms 2.0-Draw Beautiful Gradient Backdrops
Set Gradient/Shaded Background to Windows form using c#

在此处查看protected override void OnPaintBackground(PaintEventArgs e) { Rectangle rc = new Rectangle(0, 0, this.ClientSize.Width, this.ClientSize.Height); using (LinearGradientBrush brush = new LinearGradientBrush(rc, Color.Red, Color.Blue, 45F)) { e.Graphics.FillRectangle(brush, rc); } 相关信息： Resize -
Create a Gradient background on your Forms or Controls

检查这个SO线程也.. Transparent control backgrounds on a VB.NET gradient filled form?